New and improved IK system for Skeleton2D
This PR and commit adds a new IK system for 2D with the Skeleton2D node
that adds several new IK solvers, a way to control bones in a Skeleton2D
node similar to that in Skeleton3D. It also adds additional changes
and functionality.
This work was sponsored by GSoC 2020 and TwistedTwigleg.
Full list of changes:
* Adds a SkeletonModifier2D resource
  * This resource is the base where all IK code is written and executed
  * Has a function for clamping angles, since it is so commonly used
  * Modifiers are unique when duplicated so it works with instancing
* Adds a SkeletonModifierStack2D resource
  * This resource manages a series of SkeletonModification2Ds
  * This is what the Skeleton2D directly interfaces with to make IK possible
* Adds SkeletonModifier2D resources for LookAt, CCDIK, FABRIK, Jiggle, and TwoBoneIK
  * Each modification is in its own file
  * There is also a SkeletonModifier2D resource that acts as a stack for using multiple stacks together
* Adds a PhysicalBone2D node
  * Works similar to the PhysicalBone3D node, but uses a RigidBody2D node
* Changes to Skeleton2D listed below:
  * Skeleton2D now holds a single SkeletonModificationStack2D for IK
  * Skeleton2D now has a local_pose_override, which overrides the Bone2D position similar to how the overrides work in Skeleton3D
* Changes to Bone2D listed below:
  * The default_length property has been changed to length. Length is the length of the bone to its child bone node
  * New bone_angle property, which is the angle the bone has to its first child bone node
  * Bone2D caches its transform when not modified by IK for IK interpolation purposes
  * Bone2D draws its own editor gizmo, though this is stated to change in the future
* Changes to CanvasItemEditor listed below:
  * Bone2D gizmo drawing code removed
  * The 2D IK code is removed. Now Bone2D is the only bone system for 2D
* Transform2D now has a looking_at function for rotating to face a position
* Two new node notifications: NOTIFICATION_EDITOR_PRE_SAVE and NOTIFICATION_EDITOR_POST_SAVE
  * These notifications only are called in the editor right before and after saving a scene
  * Needed for not saving the IK position when executing IK in the editor
* Documentation for all the changes listed above.
											 
										 
										
											2020-08-03 14:02:24 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
								<?xml version="1.0" encoding="UTF-8" ?>  
						 
					
						
							
								
									
										
										
										
											2022-09-13 19:59:17 -07:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
								<class  name= "SkeletonModification2DStackHolder"  inherits= "SkeletonModification2D"  is_experimental= "true"  version= "4.0"  xmlns:xsi= "http://www.w3.org/2001/XMLSchema-instance"  xsi:noNamespaceSchemaLocation= "../class.xsd" >  
						 
					
						
							
								
									
										
											 
										
											
												New and improved IK system for Skeleton2D
This PR and commit adds a new IK system for 2D with the Skeleton2D node
that adds several new IK solvers, a way to control bones in a Skeleton2D
node similar to that in Skeleton3D. It also adds additional changes
and functionality.
This work was sponsored by GSoC 2020 and TwistedTwigleg.
Full list of changes:
* Adds a SkeletonModifier2D resource
  * This resource is the base where all IK code is written and executed
  * Has a function for clamping angles, since it is so commonly used
  * Modifiers are unique when duplicated so it works with instancing
* Adds a SkeletonModifierStack2D resource
  * This resource manages a series of SkeletonModification2Ds
  * This is what the Skeleton2D directly interfaces with to make IK possible
* Adds SkeletonModifier2D resources for LookAt, CCDIK, FABRIK, Jiggle, and TwoBoneIK
  * Each modification is in its own file
  * There is also a SkeletonModifier2D resource that acts as a stack for using multiple stacks together
* Adds a PhysicalBone2D node
  * Works similar to the PhysicalBone3D node, but uses a RigidBody2D node
* Changes to Skeleton2D listed below:
  * Skeleton2D now holds a single SkeletonModificationStack2D for IK
  * Skeleton2D now has a local_pose_override, which overrides the Bone2D position similar to how the overrides work in Skeleton3D
* Changes to Bone2D listed below:
  * The default_length property has been changed to length. Length is the length of the bone to its child bone node
  * New bone_angle property, which is the angle the bone has to its first child bone node
  * Bone2D caches its transform when not modified by IK for IK interpolation purposes
  * Bone2D draws its own editor gizmo, though this is stated to change in the future
* Changes to CanvasItemEditor listed below:
  * Bone2D gizmo drawing code removed
  * The 2D IK code is removed. Now Bone2D is the only bone system for 2D
* Transform2D now has a looking_at function for rotating to face a position
* Two new node notifications: NOTIFICATION_EDITOR_PRE_SAVE and NOTIFICATION_EDITOR_POST_SAVE
  * These notifications only are called in the editor right before and after saving a scene
  * Needed for not saving the IK position when executing IK in the editor
* Documentation for all the changes listed above.
											 
										 
										
											2020-08-03 14:02:24 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
									<brief_description > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										A modification that holds and executes a [SkeletonModificationStack2D].
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									</brief_description> 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									<description > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										This [SkeletonModification2D] holds a reference to a [SkeletonModificationStack2D], allowing you to use multiple modification stacks on a single [Skeleton2D].
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										[b]Note:[/b] The modifications in the held [SkeletonModificationStack2D] will only be executed if their execution mode matches the execution mode of the SkeletonModification2DStackHolder.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									</description> 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									<tutorials > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									</tutorials> 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									<methods > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										<method  name= "get_held_modification_stack"  qualifiers= "const" > 
							 
						 
					
						
							
								
									
										
										
										
											2021-07-30 15:28:05 +02:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
											<return  type= "SkeletonModificationStack2D"  /> 
							 
						 
					
						
							
								
									
										
											 
										
											
												New and improved IK system for Skeleton2D
This PR and commit adds a new IK system for 2D with the Skeleton2D node
that adds several new IK solvers, a way to control bones in a Skeleton2D
node similar to that in Skeleton3D. It also adds additional changes
and functionality.
This work was sponsored by GSoC 2020 and TwistedTwigleg.
Full list of changes:
* Adds a SkeletonModifier2D resource
  * This resource is the base where all IK code is written and executed
  * Has a function for clamping angles, since it is so commonly used
  * Modifiers are unique when duplicated so it works with instancing
* Adds a SkeletonModifierStack2D resource
  * This resource manages a series of SkeletonModification2Ds
  * This is what the Skeleton2D directly interfaces with to make IK possible
* Adds SkeletonModifier2D resources for LookAt, CCDIK, FABRIK, Jiggle, and TwoBoneIK
  * Each modification is in its own file
  * There is also a SkeletonModifier2D resource that acts as a stack for using multiple stacks together
* Adds a PhysicalBone2D node
  * Works similar to the PhysicalBone3D node, but uses a RigidBody2D node
* Changes to Skeleton2D listed below:
  * Skeleton2D now holds a single SkeletonModificationStack2D for IK
  * Skeleton2D now has a local_pose_override, which overrides the Bone2D position similar to how the overrides work in Skeleton3D
* Changes to Bone2D listed below:
  * The default_length property has been changed to length. Length is the length of the bone to its child bone node
  * New bone_angle property, which is the angle the bone has to its first child bone node
  * Bone2D caches its transform when not modified by IK for IK interpolation purposes
  * Bone2D draws its own editor gizmo, though this is stated to change in the future
* Changes to CanvasItemEditor listed below:
  * Bone2D gizmo drawing code removed
  * The 2D IK code is removed. Now Bone2D is the only bone system for 2D
* Transform2D now has a looking_at function for rotating to face a position
* Two new node notifications: NOTIFICATION_EDITOR_PRE_SAVE and NOTIFICATION_EDITOR_POST_SAVE
  * These notifications only are called in the editor right before and after saving a scene
  * Needed for not saving the IK position when executing IK in the editor
* Documentation for all the changes listed above.
											 
										 
										
											2020-08-03 14:02:24 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
											<description > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												Returns the [SkeletonModificationStack2D] that this modification is holding.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											</description> 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										</method> 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										<method  name= "set_held_modification_stack" > 
							 
						 
					
						
							
								
									
										
										
										
											2021-07-30 15:28:05 +02:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
											<return  type= "void"  /> 
							 
						 
					
						
							
								
									
										
										
										
											2022-08-06 21:11:48 +03:00 
										
									 
								 
							 
							
								
									
										 
								
							 
							
								 
							
							
											<param  index= "0"  name= "held_modification_stack"  type= "SkeletonModificationStack2D"  /> 
							 
						 
					
						
							
								
									
										
											 
										
											
												New and improved IK system for Skeleton2D
This PR and commit adds a new IK system for 2D with the Skeleton2D node
that adds several new IK solvers, a way to control bones in a Skeleton2D
node similar to that in Skeleton3D. It also adds additional changes
and functionality.
This work was sponsored by GSoC 2020 and TwistedTwigleg.
Full list of changes:
* Adds a SkeletonModifier2D resource
  * This resource is the base where all IK code is written and executed
  * Has a function for clamping angles, since it is so commonly used
  * Modifiers are unique when duplicated so it works with instancing
* Adds a SkeletonModifierStack2D resource
  * This resource manages a series of SkeletonModification2Ds
  * This is what the Skeleton2D directly interfaces with to make IK possible
* Adds SkeletonModifier2D resources for LookAt, CCDIK, FABRIK, Jiggle, and TwoBoneIK
  * Each modification is in its own file
  * There is also a SkeletonModifier2D resource that acts as a stack for using multiple stacks together
* Adds a PhysicalBone2D node
  * Works similar to the PhysicalBone3D node, but uses a RigidBody2D node
* Changes to Skeleton2D listed below:
  * Skeleton2D now holds a single SkeletonModificationStack2D for IK
  * Skeleton2D now has a local_pose_override, which overrides the Bone2D position similar to how the overrides work in Skeleton3D
* Changes to Bone2D listed below:
  * The default_length property has been changed to length. Length is the length of the bone to its child bone node
  * New bone_angle property, which is the angle the bone has to its first child bone node
  * Bone2D caches its transform when not modified by IK for IK interpolation purposes
  * Bone2D draws its own editor gizmo, though this is stated to change in the future
* Changes to CanvasItemEditor listed below:
  * Bone2D gizmo drawing code removed
  * The 2D IK code is removed. Now Bone2D is the only bone system for 2D
* Transform2D now has a looking_at function for rotating to face a position
* Two new node notifications: NOTIFICATION_EDITOR_PRE_SAVE and NOTIFICATION_EDITOR_POST_SAVE
  * These notifications only are called in the editor right before and after saving a scene
  * Needed for not saving the IK position when executing IK in the editor
* Documentation for all the changes listed above.
											 
										 
										
											2020-08-03 14:02:24 -04:00 
										
									 
								 
							 
							
								
							 
							
								 
							
							
											<description > 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
												Sets the [SkeletonModificationStack2D] that this modification is holding. This modification stack will then be executed when this modification is executed.
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
											</description> 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
										</method> 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
									</methods> 
							 
						 
					
						
							
								
							 
							
								
							 
							
								 
							
							
								</class>